Jacquard



Nov. 24, 1953 J. ASHWORTH ETAL J ACQUARD 2 Sheets-Sheet 1 Filed March27, 1952 Nov- 24, 1953 J. ASHWORTH ETAL JACQUARD 2 Sheets-Sheet 2 FiledMarch 27, 1952 x Patented Nov. 24,1953

JAGQUARD Joseph Ashworth and Albert Firth, Bradford England, assignorsto John T. Hardaker, Limited, Bradford, England, a British companyApplication March 27, 1952, Serial No. 278,942

11 Claims.

This invention relates to double lift double cylinder jacquards andespecially to the driving and mounting means for the two jacquardcylinders.

Difficulty is often experienced in jacquards of this type inconstructing the main power drive to the jacquard cylinders due to thefact that initially accurate setting is required, andfurthermore, aftera given life, it is often found that there is not true engagementbetween the driving element and the stage by stage driven with the maindrive and mounting for the two element operating each cylinder.

The main object of the present invention is to provide a double liftdouble cylinder jacquard including a pair of rotatable jacquardcylinders,

including a substantially central main driving W, V

therewith. The clutch bobbin 4 has two sets of shaft, a pair of shaftsdriven from said main shaft, said driven shafts being changeable intheir position and effective length to allow adjustment of driving andmounting units between said driven shafts and the jacquard cylinders.

Another object is to provide a double lift double cylinder jacquardincluding a pair of rotatable jacquard cylinders, driving and mountingmeans for the two jacquard cylinders including a substantially centralmain driving shaft, a pair of shafts driven from said main shaft, saiddriven shafts being changeable in their effective position and length,and each being supported at its inner end by a carrier bracket supportedon the main driving shaft, said construction of each driven shaft andits carrier bracket allowing adjustment of driving and mounting unitsbetween said driven shafts and the jacquardcylinder.

A further object is to provide a double lift double cylinder jacquard,including a pair of roof these two shafts are supported by bearingstatable jacquard cylinders, driving and mounting means for the twojacquard cylinders including a substantially central main driving shaft,3, pair of telescopic shafts driven from said main shaft, a carrierbracket at the inner end of each driven shaft and supported on the maindriving shaft for the driven shaft to be capable of pivotal movement, apair of bevel gears at the outer end of each driven shaft, a drivingelement on the driven bevel gear engaging a stage by stage driven membersecured on the shaft of one of the jacquard cylinders, and an adjustablemounting for allowing relative movement between the cylinder shaft andthe axis of the driven bevel gear.

Referring now to the accompanying drawings, in which an embodiment ofthe invention is shown:

Fig. 1 is a front elevation of a jacquard including the improvedcylinder driving and mounting means; l

Fig. 2 is a side elevation of Fig. 1;

Fig. 3 is a sectional side elevation showing a detail of the mountingfor the cylinder drive unit;

Fig. 4 is a detail side view of the clutch in the main drive; and Fig. 5is a fragmentary plan view, on an enlarged scale, of the mounting of thedriven shafts,

As shown in the drawings the jacquard [is generally of knownconstruction and need not be described in detail as the invention isconcerned jacquard cylinders 2. The main drive shaft 3 is furnished witha clutch comprisingthe movable bobbin 4 mounted with a driving bevelgear 6 on the sleeve 1 and both in driving connection clutch teeth 8, 9,so that it can be moved by a fork IE5, which engages a relatively'widegroove Ii, either into engagement with a chain wheel l2, from which itis spring returned, or into engagement with the driver clutch part l3secured to the main driving shaft 3. The chain wheel I2 is loose on thesleeve 1 and connected by chain M with the hand-operating gear I5 sothat the cylinders can be rotated manually at will by the bobbin 4 beingengaged with the chain wheel. Normally, in the position shown, motion ispicked up from the main shaft by the driver I3 and. transmitted throughthe clutch bobbin 4 to the sleeve 1 on which is fastened the bevel gear6. This wheel drives a pair of bevel pinions I6 attached to the ends ofthe telescopic shafts I I and housed in brackets [8 which are supportedby the main shaft 3 so as to be able to pivot about same for adjustmentpurposes. The outer ends I9 attached to the ends of studs 20 which canrotate therein. Each shaft is furnished with a bevel pinion 2| meshingwith a driven bevel gear 22 also mounted on the stud 20, and this bevelgear is furnished with a projecting peg 23 forming a driving element fora slotted star wheel 24 secured on the cylinder shaft 25 and forming astage by stage driving member. Each shaft 25 is supported by a cylinderbearing 26 which is adjustably secured to a cylinder bearing bracket 21on the jacquard framework. The bearing can be adjusted by screw 28 andclamped by a bolt 29 (or bolts) after being set. The bearing 26 has theinner end of the studZll secured thereto a clutch fork wherebyconsiderable movement References Cited in the file of this patent isallowed for between fork and clutch part even UNITED STATES PATENTS whenthe clutch 1s not properly 1n engagement, to obviate damage to theclutch parts. Number Name Date 11. A double lift double cylinderjacquard ac- 5 507,635 Schaum Oct. 31, 1893 cording to claim 8, whereinthe clutch movable 2,099,001 chnd 1 1937 element is adapted to bedisengageable from its eo-acting clutch part in the main power driveFOREIGN PATENTS an'd engageable with hand operating gear for NumberCountry Date enabling the cylinders to be rotated manually. 10 433,323Great t i v, 25, 1935 JOSEPH ASHWORTH.

ALBERT FIRTH.

